Answered step by step
Verified Expert Solution
Question
1 Approved Answer
why is my output coming out empty? main.cpp include #include #include #include #include SetSummable.h #include PairSummable.h #include SetSummable.h #include PairSummable.h int main(int argc, char* argv[])
why is my output coming out empty?
main.cpp
include
#include
#include
#include
#include "SetSummable.h"
#include "PairSummable.h"
#include "SetSummable.h"
#include "PairSummable.h"
int main(int argc, char* argv[])
{
std::cout
std::cout
for (int i = 0; i
std::cout
std::cout
// Process the first file
// The values in this file will be interpreted as strings
// Sumation means string concatenation.
{
sdds::SetSummable<:pairsummable std::string>, 15, std::string, std::string> products;
// get the data from the file
{
std::ifstream input(argv[1]);
if (!input)
{
std::cerr
return 3;
}
do
{
char label[64], value[64];
input >> label >> value;
if (input)
{
sdds::PairSummable<:string std::string> record(label, value);
products += record;
}
} while (input);
input.close();
}
std::cout
for (size_t i = 0; i
std::cout
std::cout
std::cout
std::cout
std::cout
std::cout
std::cout
std::cout
std::cout
}
// Process the second file
// The values in this file will be interpreted as numbers
// Sumation means mathematical addition of numbers.
{
sdds::SetSummable<:pairsummable int>, 25, std::string, int> ticketSales;
// get the data from the file
{
std::ifstream input(argv[2]);
if (!input)
{
std::cerr
return 4;
}
do
{
char ticketType[64];
int number;
input >> ticketType >> number;
if (input)
{
sdds::PairSummable<:string int> record(ticketType, number);
ticketSales += record;
}
} while (input);
input.close();
}
std::cout
for (size_t i = 0; i
std::cout
std::cout
double studentFare = 2.06;
double adultFare = 3.33;
double seniorFare = 2.5;
std::cout
std::cout
std::cout
std::cout
std::cout
}
// done
return 0;
}
#ifndef _SDDS_PAIRSUMMABLE_H
#define _SDDS_PAIRSUMMABLE_H
#include
#include "Pair.h"
namespace sdds
{
template
class PairSummable : public Pair
{
static V m_initialVal;
static size_t m_minField;
public:
static const V& getInitialValue() {
return m_initialVal;
}
PairSummable() {
}
//PairSummable(const K& key, const V& value) :Pair::Pair(key, value) {
// if (m_minField
// m_minField = key.size();
// }
//}
PairSummable(const K& m_m_key, const V& value) : Pair(m_m_key, value)
{
if (m_minField 
Sample Output When the program is started with the command (the files are provided): w3.exe products.txt sales.txt the output should look like: Command Line: 1: W3.exe 2: products.txt 3: sales.txt Individual Index Entries Groceries : tomatoes Electronics : computer Tools : hammer Groceries : lettuce Groceries : potatoes Electronics : Multimedia_player Electronics : HDD Groceries : meat Tools : jigsaw Collated Index Entries Tools: hammer, jigsaw Groceries: tomatoes, lettuce, pota Electrnics: Electronics: computer, Multimedia_pl Detail Ticket Sales Student : 25 Groceries : tomatoes Electronics : computer Tools : hammer Groceries : lettuce Groceries : potatoes Electronics : Multimedia_player Electronics : HDD Groceries : meat Tools : jigsaw Collated Index Entries Tools: hammer, jigsaw Groceries: tomatoes, lettuce, pota Electrnics: Electronics: computer, Multimedia_P1 Detail Ticket Sales Student : 25 Adult : 13 Student : 12 Adult : 6 Student : 5 Adult 15 Adult : 1 Adult : 2 Adult : 3 Student : 1 Student : 2 Adult : 5 Adult : 6 Summary of Ticket Sales Student Tickets = Adult Tickets = Senior Tickets = 92.70 169.83 0.00 Sample Output When the program is started with the command (the files are provided): w3.exe products.txt sales.txt the output should look like: Command Line: 1: W3.exe 2: products.txt 3: sales.txt Individual Index Entries Groceries : tomatoes Electronics : computer Tools : hammer Groceries : lettuce Groceries : potatoes Electronics : Multimedia_player Electronics : HDD Groceries : meat Tools : jigsaw Collated Index Entries Tools: hammer, jigsaw Groceries: tomatoes, lettuce, pota Electrnics: Electronics: computer, Multimedia_pl Detail Ticket Sales Student : 25 Groceries : tomatoes Electronics : computer Tools : hammer Groceries : lettuce Groceries : potatoes Electronics : Multimedia_player Electronics : HDD Groceries : meat Tools : jigsaw Collated Index Entries Tools: hammer, jigsaw Groceries: tomatoes, lettuce, pota Electrnics: Electronics: computer, Multimedia_P1 Detail Ticket Sales Student : 25 Adult : 13 Student : 12 Adult : 6 Student : 5 Adult 15 Adult : 1 Adult : 2 Adult : 3 Student : 1 Student : 2 Adult : 5 Adult : 6 Summary of Ticket Sales Student Tickets = Adult Tickets = Senior Tickets = 92.70 169.83 0.00
m_minField = m_m_key.size()+1 ;
}
/* If the m_m_key of the pair stored in the current instance is m_m_key, then
add the value of the pair and val together and return the result.Use + for addition.
Otherwise, return val.*/
V sum(const K& m_m_key, const V& val) const {
if (m_m_key == Pair::key()) {
return Pair::value() + val;
}
else {
return val;
}
}
void display(std::ostream& os) const
{
os.setf(std::ios::left);
os.width(m_minField);
os ::key() ::value()
os.unsetf(std::ios::left);
}
};
template
std::string PairSummable<:string std::string>::m_initialVal = "";
template
int PairSummable<:string int>::m_initialVal = 0;
template
std::string PairSummable<:string std::string>::sum(const std::string& m_m_key, const std::string& val)const {
std::string temp="k";
if (m_m_key == key()) {
temp = value() + val;
}
else {
temp = val;
}
return temp;
}
template
V PairSummable::m_initialVal = 0u;
template
size_t PairSummable::m_minField = 0U;
}
#endif
#ifndef _SDDS_SETSUMMABLE_H
#define _SDDS_SETSUMMABLE_H
#include "Set.h"
namespace sdds {
template
class SetSummable : public Set {
public:
V accumulate(const K& key) {
T get;
V temp= get.getInitialValue();
for (size_t i = 0; i ::size(); i++) {
temp = ((Set&) *this)[i].sum(key, temp);
}
return temp;
}
};
}
#endif
ifndef SDDS_PAIR_H
#define SDDS_PAIR_H
#include
namespace sdds
{
template
class Pair
{
private:
K m_key;
V Value;
public:
Pair() {
}
Pair(const K& key, const V& value) {
m_key = key;
Value = value;
}
const K& key()const {
return m_key;
}
const V& value()const {
return Value;
}
virtual void display(std::ostream& os) const {
os
}
friend std::ostream& operator& pair) {
pair.display(os);
return os;
}
};
}
#endif
#ifndef SDDS_SET_H
#define SDDS_SET_H
namespace sdds
{
template
class Set
{
T m_array[N];
static size_t counter;
public:
Set() {
}
size_t size() const {
return counter;
}
const T& operator[](size_t idx) const {
if (idx
idx = 0;
}
return m_array[idx];
}
void operator+=(const T& item) {
if (counter
m_array[counter] = item;
counter++;
}
}
};
template
size_t Set::counter = 0u;
}
#endif
products.txt
Groceries tomatoes
Electronics computer
Tools hammer
Groceries lettuce
Groceries potatoes
Electronics Multimedia_Player
Electronics HDD
Groceries meat
Tools jigsaw
sales.txt
Student 25
Adult 13
Student 12
Adult 6
Student 5
Adult 15
Adult 1
Adult 2
Adult 3
Student 1
Student 2
Adult 5
Adult 6
output should be like this(see sreenshot) 
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started
Database Systems For Advanced Applications 16th International Conference Dasfaa 2011 International Workshops Gdb Sim3 Flashdb Snsmw Damen Dqis Hong Kong China April 2011 Proceedings Lncs 6637
Authors: Jianliang Xu ,Ge Yu ,Shuigeng Zhou ,Rainer Unland
2011th Edition
3642202438, 978-3642202438
